glomerular capsule vs membrane

glomerular capsule and membrane both are nouns.

Word	Noun	Adjective	Verb	Adverb
glomerular capsule	Yes	No	No	No
membrane	Yes	No	No	No

As nouns, membrane is a hypernym of glomerular capsule; that is, membrane is a word with a broader meaning than glomerular capsule:

glomerular capsule: thin double membrane surrounding the glomerulus of a nephron
membrane: a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

Other hypernyms of glomerular capsule include tissue layer.

glomerular capsule (noun)	membrane (noun)
thin double membrane surrounding the glomerulus of a nephron	a thin pliable sheet of material
	a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants